Talk it all through with your doctor:
-you might use coconut oil to dilate. It has small molecules and might help soften the tissue
-you might ask a gyn for estrogen cream, and use it from time to time to dilate . It can also help soften the tissue.
-after three months you might use probiotic pessaries to help build a healthy flora. Many surgeons say douches are not necessary then.
https://www.susans.org/forums/index.php/topic,190515.msg1697107.html#msg1697107The prostate is still present making for a g/pspot.
This spot is connected via a second neuronal pathway and should be functioning ( and pleasurable

).
You might try with a finger a few cm inside of your vagina, towards the belly side... in a come hither motion...
or look up gspot stimulation

As Nicole99 said, talking to a supportive person might be a good idea... or a therapist...
there is also a chat on susans...
and there are helplines...
they also have a chat:
www.glbthotline.org/hotline.html
www.translifeline.org